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12425 - Established June, 2013 - all GRiSO, all the time...
 
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 Out of Power

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petarzil
Tanabuso
Tanabuso
petarzil


Posts : 53
Join date : 2017-02-09

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PostSubject: Out of Power   Out of Power Icon_minitime1Wed Apr 26, 2017 3:50 am

3 weeks ago i did the rollerisation. Changed the filter and oil, set the valves to 0,10 and 0,15. Also Installed k&n air filter and using mu custom open exhaust.

Things i haven't done: New spark plugs, new ecu maps, NO TB balance.

After all this, i have done 800kms and it worked pretty good, besides some gap around 4,200-4,400 rpm, and high backfiring at 2,500.

This morning filled the tank with 100octane as usual, and washed the bike. After that i went to work and did 10-12km around town. When i took the bike to go home, i experienced the following:

1. Starting the bike it rews at 1150 for few sec, than droping to 800.
2. If i add theottle at neutral it goes to 2,000 than back to 800 and engine shuts down.
3. If i try to run in 1st gear, it requires much more throttle than usuall.
4. When i try to ride, in 1st gear, with full throttle its like 10km/h and no power.
5. I may smell some petrol and the ride side a bit noisy ( but this might be paranoya).

Any thoughts ?
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Steak
L'Innominato
L'Innominato
Steak


Posts : 3154
Join date : 2013-05-29
Age : 57

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PostSubject: Re: Out of Power   Out of Power Icon_minitime1Wed Apr 26, 2017 4:50 am

That rock strainer "filter" and open exhaust are surely wreaking havoc on the stock, closed loop, mapping.

Reflash the ECU with an open loop map that might be a good fit for your setup.  If your going to run the stock map, you'd be better off going back to a stock paper filter and an exhaust fitted with a dB killer at the very least.  Even then, performance will improve with a proper map.

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2012 MOTO GUZZI GRiSO 1200SE

2013 MOTO GUZZI STELVIO 1200NTX - Orange Blossom Special
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Pete Roper
GRiSO Capo
GRiSO Capo
Pete Roper


Posts : 9468
Join date : 2013-05-30
Age : 65

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PostSubject: Re: Out of Power   Out of Power Icon_minitime1Wed Apr 26, 2017 5:18 am

Sounds like it's running on one cylinder. Check the plug caps, chances are one is arcing to earth, (Take the plug lead covers off and start it in a dark or poorly lit environment, you'll be able to both see and hear the spark snapping to earth, or you'd be able to if you had a decent air filter and exhaust system!)

Rock strainer filters DON'T WORK! Put a decent paper one in. Loud pipes are counter productive.
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kiwi dave
GRiSO Capo
GRiSO Capo
kiwi dave


Posts : 734
Join date : 2014-04-24
Age : 75

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PostSubject: Re: Out of Power   Out of Power Icon_minitime1Wed Apr 26, 2017 10:04 am

Check the fuel pump hose by removing the tank cap and switching the ignition on. If you see swirling, you will need to replace it.
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petarzil
Tanabuso
Tanabuso
petarzil


Posts : 53
Join date : 2017-02-09

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PostSubject: Re: Out of Power   Out of Power Icon_minitime1Fri Apr 28, 2017 6:41 pm

Solved! Plug caps were ok, but wire on the left cilinder was damaged...i have done a mistake and positioned badly when i did the rollerisation. The cap has pressed it to the rocker cover really tight.

Using 5ohms caps and wire from Audi, but i ordered 2 ngk straight caps and new wire. Also, i ordered oem air filter as advised by Pete.
Sold the k&n already to a Aprilia guy.. and hey, i made 5$ profit Smile)
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Steak
L'Innominato
L'Innominato
Steak


Posts : 3154
Join date : 2013-05-29
Age : 57

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PostSubject: Re: Out of Power   Out of Power Icon_minitime1Sat Apr 29, 2017 12:28 am

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2012 MOTO GUZZI GRiSO 1200SE

2013 MOTO GUZZI STELVIO 1200NTX - Orange Blossom Special
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